[Radiance-general] OCONV Error

[Marcus Jacobs]

Dear Group

Recently, I have encountered a problem with OCONV. As a note, I run the 
applicaiton from Windows. I should also note that the scene that I am 
attempting to compile is composed of approximately 200K  non-instanced 
polygons. With the binaries that were compiled for Desktop Radiance, when 
using oconv, I recieve an error message in a separate dialog box outside of 
the shell that I am using (CYGIN BASH Shell) that reads, "Application Error 
The instruction at "0x00406266" referenced at "0x0796db94". The memory could 
not be read. I later decomposed my 1 scene file into 2 separate files. When 
I oconv'ed them separately, there was no problem. When I attampted to 
recombine them using the -i option, the same error message occured. I then 
attempted to use the latest version of RADIANCE binaries compiled for 
Windows via CYGWIN. Basically the same thing happened as in the Desktop 
Radiance version of the binaries with the exception that instead the error 
message being in a separate dialog box, the error was listed in BASH shell 
as "Segmentation Fault" with the stackdump listed into a separate file as:

Exception: STATUS_ACCESS_VIOLATION at eip=0040A1DE
eax=FFD6B441 ebx=FFFF49A2 ecx=0000FFF7 edx=00000177 esi=0000B506 
edi=0005083F
ebp=0022F958 esp=0022F940 program=c:\Radiance\bin\oconv.exe
cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0022F958  0040A1DE  (0CA52130, 00410460, 00000000, 0CA4D524)
0022F978  0040A0BA  (0005083F, 0A040824, 0A040824, 610C5D49)
0022FA38  004039D8  (615F1F08, 0A040824, 0A040824, 00000000)
0022FE68  00403665  (615F1F08, 610CB320, 610CB320, 00000001)
0022FEF0  004012D1  (00000006, 615F1F58, 0A040328, 0022FF24)
0022FF40  61007408  (610D1F58, FFFFFFFE, 00000030, 610D1E7C)
0022FF90  610076ED  (00000000, 00000000, 80430D77, 00000000)
0022FFB0  0040EF02  (00401190, 037F0009, 0022FFF0, 77E97D08)
0022FFC0  0040103C  (0022FAE0, 0022FADC, 7FFDF000, 0022E70C)
0022FFF0  77E97D08  (00401000, 00000000, 000000C8, 00000100)
End of stack trace




I have not try to oconv't the file with the Linux binaries yet. I wil try to 
this evening but I am expecting the same error to occur.

Firstly, does anyone know what is causing this problem? I am familiar with 
the oconv error messages. I know that my error did seize when I broke down 
the scene file. It seems to me that if I had to many objects, I would 
recieve the "Hash table overflow in fullnode" error message instead of a 
Segmentation fault. Also, for many of you who have much more experience with 
using Radiance than I do, what would be a good estimate of the maximum 
number of non-instanced polygons that could be compiled into an octree 
before the "Hash table overflow in fullnode" error would be reached.

Thanks

Marcus D. Jacobs

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